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Started implementing create_qp() and destroy_qp().

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This commit is contained in:
Michael Brown
2007-09-16 19:03:24 +01:00
parent 83a6cc8c9b
commit 251cc84ed6
4 changed files with 302 additions and 48 deletions
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72
src/net/infiniband.c
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@@ -58,8 +58,8 @@ struct ib_completion_queue * ib_create_cq ( struct ib_device *ibdev,
/* Perform device-specific initialisation and get CQN */
if ( ( rc = ibdev->op->create_cq ( ibdev, cq ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not initialise CQ: %s\n",
ibdev, strerror ( rc ) );
DBGC ( ibdev, "IBDEV %p could not initialise completion "
"queue: %s\n", ibdev, strerror ( rc ) );
free ( cq );
return NULL;
}
@@ -84,6 +84,74 @@ void ib_destroy_cq ( struct ib_device *ibdev,
free ( cq );
}
/**
* Create queue pair
*
* @v ibdev Infiniband device
* @v num_send_wqes Number of send work queue entries
* @v send_cq Send completion queue
* @v num_recv_wqes Number of receive work queue entries
* @v recv_cq Receive completion queue
* @ret qp Queue pair
*/
struct ib_queue_pair * ib_create_qp ( struct ib_device *ibdev,
unsigned int num_send_wqes,
struct ib_completion_queue *send_cq,
unsigned int num_recv_wqes,
struct ib_completion_queue *recv_cq ) {
struct ib_queue_pair *qp;
int rc;
DBGC ( ibdev, "IBDEV %p creating queue pair\n", ibdev );
/* Allocate and initialise data structure */
qp = zalloc ( sizeof ( *qp ) +
( num_send_wqes * sizeof ( qp->send.iobufs[0] ) ) +
( num_recv_wqes * sizeof ( qp->recv.iobufs[0] ) ) );
if ( ! qp )
return NULL;
qp->send.qp = qp;
qp->send.is_send = 1;
qp->send.cq = send_cq;
list_add ( &qp->send.list, &send_cq->work_queues );
qp->send.num_wqes = num_send_wqes;
qp->send.iobufs = ( ( ( void * ) qp ) + sizeof ( *qp ) );
qp->recv.qp = qp;
qp->recv.cq = recv_cq;
list_add ( &qp->recv.list, &recv_cq->work_queues );
qp->recv.num_wqes = num_recv_wqes;
qp->recv.iobufs = ( ( ( void * ) qp ) + sizeof ( *qp ) +
( num_send_wqes * sizeof ( qp->send.iobufs[0] ) ));
/* Perform device-specific initialisation and get QPN */
if ( ( rc = ibdev->op->create_qp ( ibdev, qp ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not initialise queue pair: "
"%s\n", ibdev, strerror ( rc ) );
free ( qp );
return NULL;
}
DBGC ( ibdev, "IBDEV %p created queue pair %#lx\n",
ibdev, qp->qpn );
return qp;
}
/**
* Destroy queue pair
*
* @v ibdev Infiniband device
* @v qp Queue pair
*/
void ib_destroy_qp ( struct ib_device *ibdev,
struct ib_queue_pair *qp ) {
DBGC ( ibdev, "IBDEV %p destroying queue pair %#lx\n",
ibdev, qp->qpn );
ibdev->op->destroy_qp ( ibdev, qp );
free ( qp );
}
/**
* Find work queue belonging to completion queue
*